acn52832 is all you need to start developing low power consumption Iot and Bluetooth applications. The module is equipped with powerful Nordic Semiconductor’s microcontroller nrf52832 which runs on 64MHz. It is so called SoC- System on a Chip- the nrf52832 itself and Bluetooth Low Energy radio in one IC package. So acn52832 is all you need.
acn52832 module is not some kind of modem or Bluetooth transceiver only (like popular HC-05 for example).
acn52832 is a microcontroller with 64MhZ, not a modem, you don’t need other controllers